Generic Tambocor

Common Use
Tambocor is used to treat serious ventricular and supraventricular arrhythmias, including atrial fibrillation and flutter. It helps restore and maintain a normal heart rhythm. The medication is usually prescribed for patients with life-threatening or symptomatic irregular heartbeats.

Dosage and Direction
Dosage is individualized based on the patient’s condition and response. Adults typically start with a low dose taken orally, one to two times daily. Take the medication exactly as prescribed, with or without food. Do not change the dose or stop taking it without consulting your doctor.

Precautions
Inform your doctor if you have heart failure, structural heart disease, or liver/kidney problems before using Tambocor. Regular heart monitoring (ECG) may be required during treatment. Avoid alcohol and medications that can affect heart rhythm unless approved by your healthcare provider.

Contraindications
Tambocor should not be used if you have a history of cardiogenic shock, second- or third-degree AV block, or structural heart disease without a pacemaker. It is also contraindicated in severe heart failure or known hypersensitivity to flecainide. The medication should not be used during an acute heart attack.

Possible Side Effects
Common side effects include dizziness, blurred vision, headache, or nausea. Severe reactions may involve irregular heartbeat, chest pain, or fainting. Contact your healthcare provider immediately if any unusual symptoms occur.

Drug Interaction
Tambocor can interact with other antiarrhythmic drugs, certain antidepressants, and medications affecting heart rhythm. These interactions may increase the risk of serious arrhythmias. Always inform your doctor about all medications and supplements you are taking.

Missed Dose
If a dose is missed, take it as soon as possible. If it is near the time of your next dose, skip the missed dose and resume your regular schedule. Do not take a double dose to make up for a missed one.

Overdose
Overdose may cause severe heart rhythm disturbances, fainting, or life-threatening complications. Seek immediate medical attention if an overdose is suspected. Emergency care may include supportive treatment, activated charcoal, or medications to stabilize the heart.

Storage
Store Tambocor at room temperature, away from heat, moisture, and direct sunlight. Keep it out of reach of children and pets. Do not use the medication past its expiration date.

Disclaimer

We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.

Clinical Verification

Last Clinically Updated: August 15, 2026

Written By

Dr. Elena Vance, PharmD

Clinical Specialist in Neuropharmacology

Fact Checked By

Marcus Thorne, MS

Biomedical Data & FDA Label Verification

Medically Reviewed By

Dr. Arthur Campbell, MD

Board-Certified Psychiatrist (ABPN)